Trolley switch-plate.



Patented July 20, 1909.

ls'ier Bel Z ANDREW. a. GRAHAM c0, mom-mamas. wAsmnsrom u. c

UNITED STATES PATENT OFFICE.

ESTER BELL, OF DUNBAR, PENNSYLVANIA.

TROLLEY SWITCH-PLATE.

To all whom it may concern:

Be it known that I, ESTER BELL, a citizen of the United States ofAmerica, residing at Dunbar, in the county of Fayette and State ofPennsylvania, have invented certain new and useful Improvements inTrolley Switch- Plates, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to a trolley switch plate, and the object of myinvention is to provide a switch plate having depending invertedV-shaped guide flanges for preventing a trolley wheel from jumping fromthe electrical conductor in the switch plate and injuring the switchplate, the hanger thereof, and the over-head work of a street railwaysystem.

The detail construction entering into my invention will hereinafterappear and then be particularly pointed out 1n the appended claims.

In the drawings, Fi ure 1 is a bottom plan of a two-way switch p%ate,Fig. 2 is a similar view of athree-way switch plate, Fig. 3 is a crosssectional view of the two-way switch plate, Fig. 4 is a cross sectionalview of a three-way switch plate, and Fig. 5 is an enlarged crosssectional view of a portion of one of said plates.

In the practice of my invention, I preferably use sheet metal that canbe easily pressed and shaped to provide a trolley switch late havingconverging guide grooves ormed therein for safely guiding a trolleywheel from one wire or electrical conductor to another.

The metal is shaped and bent to provide.

Specification of Letters Patent.

Application filed December 26, 1908.

Patented July 20, 1909.

Serial No. 469,296.

tion by eyebolts 6, these bolts permitting of a hanger 7 and suspensionwires 8 being con nected to the switch plate to support the same above atrack or tracks.

In a two-way switch plate, two of the grooves 1 converge into a singlegroove, and in a three-way switch plate three of said grooves convergeinto one groove, representing three tracks converging into one.

The side walls 2 safely guide the trolley harp 4 and the trolley pole 9when assing beneath a switch plate and considerab e time and labor issaved by making it unnecessary for the conductor or operator of the carto give a trolley pole his attention when passing intersections.

While in the drawings there is illustrated the referred embodiment of myinvention, I wou d have it understood that the elements thereof can bevaried as to shape, and size without departing from the spirit of theinvention.

Having now described my invention, what I claim as new, is

1. A trolley switch plate provided with inverted V-shaped converginggrooves, and V- shaped electrical conductors located in the apex of saidgrooves, substantially as described.

2. A trolley switch plate comprising side walls, roviding invertedV-shaped grooves, and e ectrical conductors located in said grooves,substantially as described.

3. A trolley switch plate comprising converging guide-ways of invertedV-shape in cross section, said guide-ways flaring at their lower ends,and electrical conductors located in said guide-ways.

In testimony whereof I afiiX my signature in the presence of twowitnesses.

ESTER BELL.

lVitnesses JAMEs BARRETT, JosEPH CEPLEGHE.

